diff --git a/src/composables/useFullscreenLoading.ts b/src/composables/useFullscreenLoading.ts
index f88b211..1572aad 100644
--- a/src/composables/useFullscreenLoading.ts
+++ b/src/composables/useFullscreenLoading.ts
@@ -1,15 +1,6 @@
 import type { LoadingOptions } from "element-plus"
 import { ElLoading } from "element-plus"
 
-const defaultOptions = {
-  lock: true,
-  text: "加载中..."
-}
-
-interface LoadingInstance {
-  close: () => void
-}
-
 interface UseFullscreenLoading {
   <T extends (...args: Parameters<T>) => ReturnType<T>>(
     fn: T,
@@ -17,8 +8,17 @@ interface UseFullscreenLoading {
   ): (...args: Parameters<T>) => Promise<ReturnType<T>>
 }
 
+interface LoadingInstance {
+  close: () => void
+}
+
+const DEFAULT_OPTIONS = {
+  lock: true,
+  text: "加载中..."
+}
+
 /**
- * 传入一个函数 fn，在它执行周期内，加上「全屏」loading
+ * 传入一个函数 fn，在它执行周期内，加上「全屏」Loading
  * @param fn 要执行的函数
  * @param options LoadingOptions
  * @returns 返回一个新的函数，该函数返回一个 Promise
@@ -27,10 +27,10 @@ export const useFullscreenLoading: UseFullscreenLoading = (fn, options = {}) =>
   let loadingInstance: LoadingInstance
   return async (...args) => {
     try {
-      loadingInstance = ElLoading.service({ ...defaultOptions, ...options })
+      loadingInstance = ElLoading.service({ ...DEFAULT_OPTIONS, ...options })
       return await fn(...args)
     } finally {
-      loadingInstance?.close()
+      loadingInstance.close()
     }
   }
 }